unimore/kernel-hacking-2024-linux-steffo
unimore/kernel-hacking-2024-linux-steffo
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Pull video-2.6.24 into release branch

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This commit is contained in:
Len Brown 2007-11-20 01:20:57 -05:00
commit d89a9bda14
1 changed files with 75 additions and 80 deletions
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155
drivers/acpi/video.c
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@ -29,6 +29,7 @@
#include <linux/init.h>
#include <linux/types.h>
#include <linux/list.h>
#include <linux/mutex.h>
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
#include <linux/input.h>
@ -135,8 +136,8 @@ struct acpi_video_bus {
u8 attached_count;
struct acpi_video_bus_cap cap;
struct acpi_video_bus_flags flags;
struct semaphore sem;
struct list_head video_device_list;
struct mutex device_list_lock; /* protects video_device_list */
struct proc_dir_entry *dir;
struct input_dev *input;
char phys[32]; /* for input device */
@ -896,7 +897,7 @@ acpi_video_device_write_brightness(struct file *file,
{
struct seq_file *m = file->private_data;
struct acpi_video_device *dev = m->private;
char str[4] = { 0 };
char str[5] = { 0 };
unsigned int level = 0;
int i;
@ -1436,9 +1437,9 @@ acpi_video_bus_get_one_device(struct acpi_device *device,
return -ENODEV;
}
down(&video->sem);
mutex_lock(&video->device_list_lock);
list_add_tail(&data->entry, &video->video_device_list);
up(&video->sem);
mutex_unlock(&video->device_list_lock);
acpi_video_device_add_fs(device);
@ -1462,12 +1463,14 @@ acpi_video_bus_get_one_device(struct acpi_device *device,
static void acpi_video_device_rebind(struct acpi_video_bus *video)
{
struct list_head *node, *next;
list_for_each_safe(node, next, &video->video_device_list) {
struct acpi_video_device *dev =
container_of(node, struct acpi_video_device, entry);
struct acpi_video_device *dev;
mutex_lock(&video->device_list_lock);
list_for_each_entry(dev, &video->video_device_list, entry)
acpi_video_device_bind(video, dev);
}
mutex_unlock(&video->device_list_lock);
}
/*
@ -1592,30 +1595,33 @@ static int acpi_video_device_enumerate(struct acpi_video_bus *video)
static int acpi_video_switch_output(struct acpi_video_bus *video, int event)
{
struct list_head *node, *next;
struct list_head *node;
struct acpi_video_device *dev = NULL;
struct acpi_video_device *dev_next = NULL;
struct acpi_video_device *dev_prev = NULL;
unsigned long state;
int status = 0;
mutex_lock(&video->device_list_lock);
list_for_each_safe(node, next, &video->video_device_list) {
list_for_each(node, &video->video_device_list) {
dev = container_of(node, struct acpi_video_device, entry);
status = acpi_video_device_get_state(dev, &state);
if (state & 0x2) {
dev_next =
container_of(node->next, struct acpi_video_device,
entry);
dev_prev =
container_of(node->prev, struct acpi_video_device,
entry);
dev_next = container_of(node->next,
struct acpi_video_device, entry);
dev_prev = container_of(node->prev,
struct acpi_video_device, entry);
goto out;
}
}
dev_next = container_of(node->next, struct acpi_video_device, entry);
dev_prev = container_of(node->prev, struct acpi_video_device, entry);
out:
out:
mutex_unlock(&video->device_list_lock);
switch (event) {
case ACPI_VIDEO_NOTIFY_CYCLE:
case ACPI_VIDEO_NOTIFY_NEXT_OUTPUT:
@ -1691,24 +1697,17 @@ acpi_video_bus_get_devices(struct acpi_video_bus *video,
struct acpi_device *device)
{
int status = 0;
struct list_head *node, *next;
struct acpi_device *dev;
acpi_video_device_enumerate(video);
list_for_each_safe(node, next, &device->children) {
struct acpi_device *dev =
list_entry(node, struct acpi_device, node);
if (!dev)
continue;
list_for_each_entry(dev, &device->children, node) {
status = acpi_video_bus_get_one_device(dev, video);
if (ACPI_FAILURE(status)) {
ACPI_EXCEPTION((AE_INFO, status, "Cant attach device"));
continue;
}
}
return status;
}
@ -1724,9 +1723,6 @@ static int acpi_video_bus_put_one_device(struct acpi_video_device *device)
video = device->video;
down(&video->sem);
list_del(&device->entry);
up(&video->sem);
acpi_video_device_remove_fs(device->dev);
status = acpi_remove_notify_handler(device->dev->handle,
@ -1734,32 +1730,34 @@ static int acpi_video_bus_put_one_device(struct acpi_video_device *device)
acpi_video_device_notify);
backlight_device_unregister(device->backlight);
video_output_unregister(device->output_dev);
return 0;
}
static int acpi_video_bus_put_devices(struct acpi_video_bus *video)
{
int status;
struct list_head *node, *next;
struct acpi_video_device *dev, *next;
mutex_lock(&video->device_list_lock);
list_for_each_safe(node, next, &video->video_device_list) {
struct acpi_video_device *data =
list_entry(node, struct acpi_video_device, entry);
if (!data)
continue;
list_for_each_entry_safe(dev, next, &video->video_device_list, entry) {
status = acpi_video_bus_put_one_device(data);
status = acpi_video_bus_put_one_device(dev);
if (ACPI_FAILURE(status))
printk(KERN_WARNING PREFIX
"hhuuhhuu bug in acpi video driver.\n");
if (data->brightness)
kfree(data->brightness->levels);
kfree(data->brightness);
kfree(data);
if (dev->brightness) {
kfree(dev->brightness->levels);
kfree(dev->brightness);
}
list_del(&dev->entry);
kfree(dev);
}
mutex_unlock(&video->device_list_lock);
return 0;
}
@ -1782,9 +1780,6 @@ static void acpi_video_bus_notify(acpi_handle handle, u32 event, void *data)
struct input_dev *input;
int keycode;
printk("video bus notify\n");
if (!video)
return;
@ -1897,14 +1892,10 @@ static void acpi_video_device_notify(acpi_handle handle, u32 event, void *data)
static int instance;
static int acpi_video_bus_add(struct acpi_device *device)
{
int result = 0;
acpi_status status = 0;
struct acpi_video_bus *video = NULL;
acpi_status status;
struct acpi_video_bus *video;
struct input_dev *input;
if (!device)
return -EINVAL;
int error;
video = kzalloc(sizeof(struct acpi_video_bus), GFP_KERNEL);
if (!video)
@ -1923,15 +1914,15 @@ static int acpi_video_bus_add(struct acpi_device *device)
acpi_driver_data(device) = video;
acpi_video_bus_find_cap(video);
result = acpi_video_bus_check(video);
if (result)
goto end;
error = acpi_video_bus_check(video);
if (error)
goto err_free_video;
result = acpi_video_bus_add_fs(device);
if (result)
goto end;
error = acpi_video_bus_add_fs(device);
if (error)
goto err_free_video;
init_MUTEX(&video->sem);
mutex_init(&video->device_list_lock);
INIT_LIST_HEAD(&video->video_device_list);
acpi_video_bus_get_devices(video, device);
@ -1943,16 +1934,15 @@ static int acpi_video_bus_add(struct acpi_device *device)
if (ACPI_FAILURE(status)) {
ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
"Error installing notify handler\n"));
acpi_video_bus_stop_devices(video);
acpi_video_bus_put_devices(video);
kfree(video->attached_array);
acpi_video_bus_remove_fs(device);
result = -ENODEV;
goto end;
error = -ENODEV;
goto err_stop_video;
}
video->input = input = input_allocate_device();
if (!input) {
error = -ENOMEM;
goto err_uninstall_notify;
}
snprintf(video->phys, sizeof(video->phys),
"%s/video/input0", acpi_device_hid(video->device));
@ -1961,6 +1951,7 @@ static int acpi_video_bus_add(struct acpi_device *device)
input->phys = video->phys;
input->id.bustype = BUS_HOST;
input->id.product = 0x06;
input->dev.parent = &device->dev;
input->evbit[0] = BIT(EV_KEY);
set_bit(KEY_SWITCHVIDEOMODE, input->keybit);
set_bit(KEY_VIDEO_NEXT, input->keybit);
@ -1971,18 +1962,10 @@ static int acpi_video_bus_add(struct acpi_device *device)
set_bit(KEY_BRIGHTNESS_ZERO, input->keybit);
set_bit(KEY_DISPLAY_OFF, input->keybit);
set_bit(KEY_UNKNOWN, input->keybit);
result = input_register_device(input);
if (result) {
acpi_remove_notify_handler(video->device->handle,
ACPI_DEVICE_NOTIFY,
acpi_video_bus_notify);
acpi_video_bus_stop_devices(video);
acpi_video_bus_put_devices(video);
kfree(video->attached_array);
acpi_video_bus_remove_fs(device);
goto end;
}
error = input_register_device(input);
if (error)
goto err_free_input_dev;
printk(KERN_INFO PREFIX "%s [%s] (multi-head: %s rom: %s post: %s)\n",
ACPI_VIDEO_DEVICE_NAME, acpi_device_bid(device),
@ -1990,11 +1973,23 @@ static int acpi_video_bus_add(struct acpi_device *device)
video->flags.rom ? "yes" : "no",
video->flags.post ? "yes" : "no");
end:
if (result)
kfree(video);
return 0;
return result;
err_free_input_dev:
input_free_device(input);
err_uninstall_notify:
acpi_remove_notify_handler(device->handle, ACPI_DEVICE_NOTIFY,
acpi_video_bus_notify);
err_stop_video:
acpi_video_bus_stop_devices(video);
acpi_video_bus_put_devices(video);
kfree(video->attached_array);
acpi_video_bus_remove_fs(device);
err_free_video:
kfree(video);
acpi_driver_data(device) = NULL;
return error;
}
static int acpi_video_bus_remove(struct acpi_device *device, int type)